Samsung SGH-X820 Service Manual page 51

Flow Chart of Troubleshooting
VIB_DRV
SPK_P_CON
SPK_N_CON
SPK_N_OUT
SPK_P_OUT
AMP_EN
VBAT
L404
L405
1
1
2
2
3
3
4
L406 4
5
5
L407
6
6
NC
7
NC
8
C499
CN401
VBAT
10
1
VCC
2
NO1
3
R468
C489
C454
SPK_N_CON
9 8
7
NC
U406
6
GND
4 5
SPK_P_CON
C463 C459
10-12
R449
AOUTAN
R443
AOUTAP